CN110080455B - Prefabricated shear wall, connecting node and construction method thereof - Google Patents
Prefabricated shear wall, connecting node and construction method thereof Download PDFInfo
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- CN110080455B CN110080455B CN201910489721.6A CN201910489721A CN110080455B CN 110080455 B CN110080455 B CN 110080455B CN 201910489721 A CN201910489721 A CN 201910489721A CN 110080455 B CN110080455 B CN 110080455B
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- 238000010276 construction Methods 0.000 title abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 67
- 239000010959 steel Substances 0.000 claims abstract description 67
- 239000004567 concrete Substances 0.000 claims abstract description 13
- 239000012792 core layer Substances 0.000 claims description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims 3
- 210000003734 kidney Anatomy 0.000 claims 1
- 238000011065 in-situ storage Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 9
- 239000011178 precast concrete Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011376 self-consolidating concrete Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8623—Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers and at least one form leaf being monolithic
- E04B2/8629—Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers and at least one form leaf being monolithic with both form leaves and spacers being monolithic
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Reinforcement Elements For Buildings (AREA)
- Load-Bearing And Curtain Walls (AREA)
Abstract
The application relates to a prefabricated shear wall, a connecting node and a construction method thereof, wherein the prefabricated shear wall comprises an outer page wall and an inner page wall which are arranged in parallel, and the outer page wall and the inner page wall are connected through a plurality of trusses; the top of the outer page wall and the top of the inner page wall are provided with a plurality of inverted U-shaped first stirrups, one end of each first stirrup extends into the outer page wall from the top end of the outer page wall, and the other end of each first stirrup extends into the inner page wall from the top end of the inner page wall; the bottom of outer page or leaf wall and interior page or leaf wall is equipped with many second stirrups that are the U type, the one end of second stirrups stretches into in the outer page or leaf wall from the bottom of outer page or leaf wall, the other end of second stirrups stretches into in the interior page or leaf wall from the bottom of interior page or leaf wall. The application can ensure that all wallboards can be connected into a whole by using the on-site cast-in-situ concrete, and ensure the detectability of the wallboard steel bar connection area; the grouting sleeve is canceled, so that the number of steel bars and embedded parts in the wall body is reduced, the labor capacity of workers is reduced, and the cost is reduced.
Description
Technical Field
The application relates to a prefabricated shear wall, a connecting node and a construction method thereof, and belongs to the technical field of assembly type buildings.
Background
At present, a vertical node is a grouting sleeve connection mode, a ribbed steel bar is inserted into a grouting sleeve with an inner cavity having a concave-convex surface, a special high-strength cement-based grouting material is filled between the sleeve and the steel bar, and the steel bar is anchored in the sleeve after the grouting material is solidified.
But now the main problem arises in: the grouting material is used as a main construction material, the quality of the grouting material can not affect the construction effect, besides the grouting material per se, the grouting material also comprises diluted concentration conditions, and after all, the grouting material can affect the connection tightness between the reinforcing steel bars and the sleeve and the integral strength of the grouting material. However, this problem may occur in the construction of many engineering projects, that is, the quality of the construction material is not guaranteed, and thus it is a problem that needs to be rapidly solved. There is also a problem of the skill level and overall quality of the constructors, which is reflected in many industries to a varying extent, since after all, a large part of the work needs to be done manually, the ability of the staff is of vital importance. The problem occurs in grouting construction of the steel bar sleeve, and mainly because of lack of culture of professional talents, requirements of construction units are not strict enough when construction personnel recruit, so that most construction personnel lack enough working capacity to cause the influence of different degrees on construction quality.
The main disadvantages of the existing preformed hole plug-in type slurry anchor connection mode are as follows: 1. without inspection methods, it is not possible to determine whether the grouting material fills the grouting sleeve lumen. 2. The cost is high, and the cost price of the grouting sleeve is high. 3. The production difficulty is big, fixes the grout sleeve in fixed position, needs the workman to confirm the position, prevents the off tracking. 4. The field construction difficulty is high, and the danger coefficient is high. When in field installation, the extended steel bars on the lower wallboard are accurately inserted into the inner cavity of the grouting sleeve of the last wallboard, the field operation is complex, and 3-4 workers are required to be matched together for completion. 5. The grouting quality cannot be ensured.
Disclosure of Invention
Aiming at the defects of the prior art, the prefabricated shear wall, the connecting node and the construction method thereof are convenient to install and ensure the structural strength.
In order to solve the technical problems, the technical scheme of the application is as follows:
the prefabricated shear wall comprises an outer page wall and an inner page wall which are arranged in parallel, wherein the outer page wall and the inner page wall are connected through a plurality of trusses; the top of the outer page wall and the top of the inner page wall are provided with a plurality of inverted U-shaped first stirrups, one end of each first stirrup extends into the outer page wall from the top end of the outer page wall, the other end of each first stirrup extends into the inner page wall from the top end of the inner page wall, and the plurality of first stirrups are sequentially distributed along the width direction of the shear wall; the bottom of outer page or leaf wall and interior page or leaf wall is equipped with many second stirrups that are the U type, the one end of second stirrups stretches into in the outer page or leaf wall from the bottom of outer page or leaf wall, the other end of second stirrups stretches into in the interior page or leaf wall from the bottom of interior page or leaf wall.
Further, the top end of the outer page wall is flush with the top end of the inner page wall; or the top end of the outer page wall is higher than the top end of the inner page wall.
Further, a core layer is arranged between the outer page wall and the inner page wall, preferably, a plurality of through holes penetrating through the top end face and the lower end face of the core layer are arranged in the core layer, and further preferably, the through holes are kidney-shaped holes; or a gap is reserved between the outer page wall and the inner page wall, and the distance between the outer page wall and the inner page wall is 80-120mm. Therefore, in the factory prefabrication stage, a hollow structure between the outer page wall and the inner page wall can be reserved, pouring is performed on site, a core layer can be arranged, a through hole is further formed in the core layer, weight is reduced, pouring operation is convenient, and the integrity and the connection strength of a building can be improved.
Further, a first vertical steel bar is pre-buried in the outer page wall, the top end of the first vertical steel bar is connected with one end of the first stirrup extending into the outer page wall, and the bottom end of the first vertical steel bar is connected with one end of the second stirrup extending into the outer page wall; the second vertical steel bars are embedded in the outer page wall, the top ends of the second vertical steel bars are connected with one ends of the first stirrups extending into the inner page wall, and the bottom ends of the second vertical steel bars are connected with one ends of the second stirrups extending into the inner page wall. Therefore, the integrity of the outer page wall, the inner page wall and the prefabricated shear wall can be improved, the structural strength is ensured, and the connection between the prefabricated shear walls or between the prefabricated shear walls and other components is more stable.
Further, a plurality of first horizontal steel bars are embedded in the outer page wall, and the first horizontal steel bars are distributed in sequence along the height direction of the outer page wall; the inner page wall is embedded with a plurality of second horizontal steel bars, the second horizontal steel bars are distributed in sequence along the height direction of the inner page wall, structural strength is guaranteed, ribs can be arranged as required, and connection between the side end of the prefabricated shear wall and other components is facilitated.
Further, the distance between the top of the first stirrup and the top of the outer page wall is 250-350mm; the distance between the top of the second stirrup and the bottom end of the outer page wall is 250-350mm, enough space is provided, a 'hidden beam' with reasonable size is formed, the left and right bending resistance and the bearing capacity of the 'hidden beam' of a connecting node between adjacent prefabricated shear walls are ensured, and the structural strength is further ensured.
Further, the truss comprises 2 third vertical steel bars and second vertical steel bars which are arranged in parallel and located in the same vertical plane, the second vertical steel bars are parallel to the first vertical steel bars, and the second vertical steel bars are connected with the 2 first vertical steel bars through a plurality of inclined steel bars respectively. The truss is arranged, so that the outer page wall and the inner page wall have relatively fixed position relation, and the operation such as hoisting is convenient.
The connecting node between the prefabricated shear walls is suitable for connecting 2 prefabricated shear walls in an upper-lower position relationship, and for convenience of description, the prefabricated shear wall positioned above is marked as a first prefabricated shear wall, and the prefabricated shear wall positioned below is marked as a second prefabricated shear wall; the method is characterized in that a superposition area exists between the second stirrup of the first precast shear wall and the first stirrup of the second precast shear wall in the horizontal direction, and a plurality of third horizontal steel bars extending along the width direction of the precast shear wall are arranged in the superposition area to form a connecting node frame; and concrete is poured at the connecting node frame.
Optionally, when a gap is left between the outer page wall and the inner page wall of the second prefabricated shear wall, or a through hole is formed in a core layer between the outer page wall and the inner page wall, concrete can be poured from a hollow part or a through hole at the top end of the second prefabricated shear wall until the concrete is poured to the top end of the second prefabricated shear wall. And the on-site cast-in-place concrete is carried out on the gaps or through holes in the prefabricated shear wall, so that the whole vertical components are guaranteed to be connected into a whole, and the integrity of the building is improved.
Preferably, the size of the overlapping area in the vertical direction is not less than 200mm, so as to form a thick enough 'dark beam', and the structural strength is ensured.
Further, the number of the third horizontal steel bars is at least 4, wherein at least 2 are distributed at the inner top of the first stirrup of the second prefabricated shear wall, at least 2 are distributed at the inner bottom of the second stirrup of the first prefabricated shear wall, and the horizontal bending resistance of the prefabricated shear wall is improved.
The construction method of the connecting node comprises the following steps:
s1, hoisting a first precast shear wall in place, so that second stirrups of the first precast shear wall extend into between the first stirrups of the second precast shear wall;
s2, arranging third horizontal steel bars in the overlapping area, and binding the third horizontal steel bars on corresponding stirrups to form a connecting node frame;
and S3, erecting a template around the connecting node frame, pouring, maintaining and removing the template.
According to the application, through the arrangement of stirrups on the prefabricated shear wall and the lower prefabricated shear wall, the hidden beam can be formed through the cooperation of the second stirrups of the upper prefabricated shear wall, the first stirrups of the lower prefabricated shear wall and the third horizontal steel bars, and the integrity and the structural strength of the connecting nodes of the upper prefabricated shear wall and the lower prefabricated shear wall are ensured.
The use of the prefabricated shear wall can cancel the mode of connecting the vertical grouting sleeve with the node, and change the mode into the mode of connecting the ring anchor of the vertical double-skin shear wall with the node; and when the prefabricated shear wall is hoisted, the upper and lower prefabricated shear walls are guaranteed to be on the same vertical line through the pre-buried positioning nodes in the prefabricated shear walls, after the upper prefabricated shear wall is hoisted in place, the third horizontal steel bars are bound in the overlapping area of the stirrup rings of the upper and lower prefabricated shear walls, the formwork is supported, casting is carried out, and the next work can be carried out after concrete is solidified.
Further, the concrete may be self-compacting concrete.
The application has the advantages that: 1. the connecting strength is high, a 'hidden beam' is formed at the connecting node, and the horizontal impact or load resistance of the prefabricated shear wall is effectively improved; 2. the instrument can detect, guarantees that all wallboards can be connected into a whole by the cast-in-place concrete on site, and guarantees the detectability of wallboard steel bar connection areas. 3. The grouting sleeve is omitted, the number of steel bars and embedded parts in the wall body is reduced, and the labor capacity of workers is reduced. 4. The production difficulty is reduced, and embedded parts such as grouting sleeves and the like are not required to be installed during factory production. 5. The difficulty of site construction is reduced, and the difficulty of site hoisting on holes is greatly reduced. 6. The middle hollow structure can be adopted, so that the weight of the component is greatly reduced, and the transportation is convenient. 7. Compared with cast-in-situ, the wall form quantity is reduced.
Drawings
FIG. 1 is a vertical cross-sectional view of a prefabricated shear wall according to a first embodiment of the application.
Fig. 2 is a schematic structural view of a connection node according to a first embodiment of the present application.
Fig. 3 is a cross-sectional view of a truss according to a first embodiment of the application.
Fig. 4 is a schematic structural view of a sling according to a first embodiment of the present application.
FIG. 5 is a cross-sectional view of a prefabricated shear wall according to a second embodiment of the application taken in a horizontal direction.
Detailed Description
The present application will be described in detail with reference to examples. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are used hereinafter to denote only the directions corresponding to the upper, lower, left, and right directions of the drawings, and do not limit the structure.
As shown in fig. 1 to 4, a prefabricated shear wall comprises an outer page wall 1 and an inner page wall 2 which are arranged in parallel, wherein the outer page wall 1 and the inner page wall 2 are connected through a plurality of trusses 5; the top of the outer page wall 1 and the top of the inner page wall 2 are provided with a plurality of inverted U-shaped first stirrups 3, one end of each first stirrup 3 extends into the outer page wall from the top of the outer page wall, the other end of each first stirrup 3 extends into the inner page wall from the top of the inner page wall, and the plurality of first stirrups 3 are distributed in sequence along the width direction of the shear wall; the bottom of outer page or leaf wall 1 and interior page or leaf wall 2 is equipped with many second stirrups 4 that are the U type, the one end of second stirrups 4 stretches into in the outer page or leaf wall from the bottom of outer page or leaf wall, the other end of second stirrups 4 stretches into in the interior page or leaf wall from the bottom of interior page or leaf wall.
The top of the outer page wall 1 is higher than the top of the inner page wall 2, so that the precast shear wall and the precast concrete slab 10 can be conveniently connected, the connecting end of the precast concrete slab can be placed at the top of the inner page wall 2, after relevant reinforcing steel bars are arranged, the precast concrete slab and the precast shear wall can be connected by casting in situ, and a cast-in-situ layer 11 is formed on the surface of the precast concrete slab.
A core layer 14 is arranged between the outer page wall 1 and the inner page wall 2, and optionally, the core layer 14 is directly cast by concrete in a factory; as another preferred embodiment, the core layer 14 is provided with a plurality of through holes 1401 penetrating through the top end surface and the lower end surface of the core layer, so that on one hand, the weight of the prefabricated shear wall can be reduced, the transportation is convenient, on the other hand, the pouring is convenient, the integrity of the prefabricated shear wall and the corresponding connection node is improved, and the structural strength of the fabricated building is improved; further preferably, the through hole is a kidney-shaped hole, optionally, the length of the kidney-shaped hole in the horizontal direction is 300mm, the width is 100mm, and the radius of the circular arcs on two sides is 50mm; as another embodiment, a gap is reserved between the outer page wall 1 and the inner page wall 2, so that the weight is lighter, the transportation is convenient, and the core layer is cast together with the connecting node on site to form an integrated structure, so that the integrity and the strength of the building can be improved.
The distance between the outer page wall 1 and the inner page wall 2 is 100mm.
A first vertical steel bar 12 is embedded in the outer page wall 1, the top end of the first vertical steel bar 12 is connected with one end of the first stirrup 3 extending into the outer page wall, and the bottom end of the first vertical steel bar 12 is connected with one end of the second stirrup 4 extending into the outer page wall; the second vertical steel bars 13 are embedded in the outer page wall 1, the top ends of the second vertical steel bars 13 are connected with one ends of the first stirrups 3 extending into the inner page wall, and the bottom ends of the second vertical steel bars 13 are connected with one ends of the second stirrups 4 extending into the inner page wall.
A plurality of first horizontal steel bars 8 are embedded in the outer page wall, and the first horizontal steel bars 8 are distributed in sequence along the height direction of the outer page wall; the inner page wall is embedded with a plurality of second horizontal steel bars 9, and the second horizontal steel bars 9 are distributed in sequence along the height direction of the inner page wall. Optionally, a third stirrup 15 in a U shape is arranged at one side end of the prefabricated shear wall, one end of the third stirrup 15 stretches into the outer page wall and is connected with the first horizontal steel bar 8, and the other end of the third stirrup 15 stretches into the inner page wall and is connected with the second horizontal steel bar 9; the other side end of the prefabricated shear wall is provided with a U-shaped fourth stirrup 16, one end of the fourth stirrup 16 stretches into the outer page wall and is connected with the first horizontal steel bar 8, and the other end of the fourth stirrup 16 stretches into the inner page wall and is connected with the second horizontal steel bar 9.
The distance between the top of the first stirrup and the top of the outer page wall is 300mm; the distance between the top of the second stirrup and the bottom end of the outer page wall is 300mm.
The top of prefabricated shear force wall is equipped with 2 at least lifting parts 17, lifting parts 17 is including the rings portion 1701 that is the type of falling V, the bottom of rings portion is connected with the first leg 1702 of pre-buried in outer page wall and the second leg 1705 of pre-buried in inner page wall, the welding has a plurality of first strengthening ribs 1703 that extend along outer page wall width direction on the first leg 1702, the welding has a plurality of second strengthening ribs 1704 that extend along inner page wall width direction on the second leg. The first extending leg and the second extending leg are connected through a plurality of third reinforcing ribs 1706. Therefore, the hoisting piece with high structural strength and stable connection with the precast shear wall is formed, the hoisting of the precast shear wall is facilitated, the third reinforcing rib can be arranged at the position close to the hoisting ring part, the stress concentration phenomenon near the connection position of the extending leg and the hoisting ring part in the hoisting process is slowed down or avoided, and the outer page wall or the inner page wall is prevented from being damaged.
As shown in fig. 3, the truss 5 includes 2 third vertical bars 501 and fourth vertical bars 503 that are disposed parallel to each other and located in the same vertical plane, the third vertical bars are parallel to the fourth vertical bars, the fourth vertical bars are connected with 2 third vertical bars through a plurality of oblique bars 502, and optionally, the third vertical bars 501 are disposed in the inner page wall, and the fourth vertical bars are disposed in the outer page wall. Optionally, the truss extends in a vertical direction, and the truss is a plurality of truss parallel to each other.
Further, a first steel pipe can be arranged at the upper end of the prefabricated shear wall, a second steel pipe corresponding to the first steel pipe in the position is arranged at the lower end of the prefabricated shear wall, the inner diameter of the first steel pipe is matched with the outer diameter of the second steel pipe, and when the prefabricated shear wall is hoisted, the second steel pipe of the prefabricated shear wall on the upper layer can extend into the first steel pipe of the prefabricated shear wall on the lower layer, so that positioning is realized, and the upper prefabricated shear wall and the lower prefabricated shear wall are on the same vertical line. Optionally, the first steel pipe has a specification of DN40 and the second steel pipe has a specification of DN25.
The connecting node between the prefabricated shear walls is suitable for connecting 2 prefabricated shear walls in an upper-lower position relationship, and for convenience of description, the prefabricated shear wall positioned above is marked as a first prefabricated shear wall, and the prefabricated shear wall positioned below is marked as a second prefabricated shear wall; a superposition area exists between the second stirrup 4 of the first precast shear wall and the first stirrup 3 of the second precast shear wall in the horizontal direction, and a plurality of third horizontal steel bars 7 extending along the width direction of the precast shear wall are arranged in the superposition area to form a connecting node frame; and concrete is poured at the connecting node frame.
The number of the third horizontal steel bars 7 is 6, wherein 2 are distributed at the inner top of the first stirrup 3 of the second prefabricated shear wall, 2 are distributed at the inner bottom of the second stirrup 4 of the first prefabricated shear wall, and 2 are distributed at the middle part of the overlapping area, namely, between the inner top and the inner bottom.
The construction method of the connecting node comprises the following steps:
s1, hoisting a first precast shear wall in place, so that second stirrups of the first precast shear wall extend into between the first stirrups of the second precast shear wall;
s2, arranging third horizontal steel bars 7 in the overlapping area, and binding the third horizontal steel bars on corresponding stirrups to form a connecting node frame;
and S3, erecting a template around the connecting node frame, pouring, maintaining and removing the template.
Compared with the prior concrete precast shear wall structure system, the concrete precast shear wall structure system has the characteristics that the structure connection technology adopts a vertical connection mode, and the vertical connection mode generally adopts a preformed hole inserted slurry anchor connection mode.
The foregoing examples are set forth in order to provide a more thorough description of the present application and are not intended to limit the scope of the application, and various modifications of the application, which are equivalent to those skilled in the art upon reading the present application, will fall within the scope of the application as defined in the appended claims.
Claims (10)
1. The connecting node between the prefabricated shear walls is suitable for connecting 2 prefabricated shear walls in an upper-lower position relationship, and for convenience of description, the prefabricated shear wall positioned above is marked as a first prefabricated shear wall, and the prefabricated shear wall positioned below is marked as a second prefabricated shear wall; the prefabricated shear wall is characterized by comprising an outer page wall (1) and an inner page wall (2) which are arranged in parallel, wherein the outer page wall (1) and the inner page wall (2) are connected through a plurality of trusses (5); the shear wall is characterized in that a plurality of inverted U-shaped first stirrups (3) are arranged at the top of the outer page wall (1) and the top of the inner page wall (2), one end of each first stirrup (3) extends into the outer page wall from the top end of the outer page wall, the other end of each first stirrup (3) extends into the inner page wall from the top end of the inner page wall, and the plurality of first stirrups (3) are sequentially distributed along the width direction of the shear wall; the bottoms of the outer page wall (1) and the inner page wall (2) are provided with a plurality of U-shaped second stirrups (4), one end of each second stirrup (4) extends into the outer page wall from the bottom end of the outer page wall, and the other end of each second stirrup (4) extends into the inner page wall from the bottom end of the inner page wall;
a second stirrup (4) of the first precast shear wall and a first stirrup (3) of the second precast shear wall are in a horizontal direction, the size of the overlapping area in the vertical direction is not less than 200mm, and a plurality of third horizontal steel bars (7) extending along the width direction of the precast shear wall are arranged in the overlapping area to form a connecting node frame; concrete is poured at the connecting node frame; the number of the third horizontal steel bars (7) is at least 4, wherein at least 2 are distributed at the inner top of the first stirrups (3) of the second prefabricated shear wall, and at least 2 are distributed at the inner bottom of the second stirrups (4) of the first prefabricated shear wall.
2. The connecting node according to claim 1, wherein the top end of the outer page wall (1) is flush with the top end of the inner page wall (2); or the top end of the outer page wall (1) is higher than the top end of the inner page wall (2).
3. The connecting node according to claim 1, characterized in that a core layer (14) is arranged between the outer page wall (1) and the inner page wall (2); or a gap is reserved between the outer page wall (1) and the inner page wall (2).
4. A connecting node according to claim 3, characterized in that the core (14) is provided with a number of through holes (1401) extending through the top and bottom faces of the core.
5. The connection node of claim 4, wherein the through hole is a kidney hole.
6. The connecting node according to claim 1, wherein a first vertical reinforcement bar (12) is embedded in the outer page wall (1), the top end of the first vertical reinforcement bar (12) is connected with one end of the first stirrup (3) extending into the outer page wall, and the bottom end of the first vertical reinforcement bar (12) is connected with one end of the second stirrup (4) extending into the outer page wall; the novel inner wall is characterized in that a second vertical reinforcing steel bar (13) is embedded in the outer wall (1), the top end of the second vertical reinforcing steel bar (13) is connected with one end of the first stirrup (3) extending into the inner wall, and the bottom end of the second vertical reinforcing steel bar (13) is connected with one end of the second stirrup (4) extending into the inner wall.
7. The connecting node according to claim 1, wherein a plurality of first horizontal steel bars (8) are embedded in the outer page wall, and the plurality of first horizontal steel bars (8) are distributed in sequence along the height direction of the outer page wall; the inner page wall is embedded with a plurality of second horizontal steel bars (9), and the second horizontal steel bars (9) are distributed in sequence along the height direction of the inner page wall.
8. The connection node according to claim 1, wherein the distance between the top of the first stirrup and the top of the outer page wall is 250-350mm; the distance between the top of the second stirrup and the bottom end of the outer page wall is 250-350mm.
9. The connecting node according to claim 1, wherein the truss (5) comprises 2 third vertical bars (501) and fourth vertical bars (503) which are arranged in parallel with each other and located in the same vertical plane, the fourth vertical bars are parallel with the third vertical bars, and the fourth vertical bars and the 2 third vertical bars are respectively connected through a plurality of oblique bars (502).
10. The method of constructing a connection node according to claim 1, comprising the steps of:
s1, hoisting a first precast shear wall in place, so that second stirrups of the first precast shear wall extend into between the first stirrups of the second precast shear wall;
s2, arranging third horizontal steel bars (7) in the overlapping area, and binding the third horizontal steel bars on corresponding stirrups to form a connecting node frame;
and S3, erecting a template around the connecting node frame, pouring, maintaining and removing the template.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910489721.6A CN110080455B (en) | 2019-06-06 | 2019-06-06 | Prefabricated shear wall, connecting node and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910489721.6A CN110080455B (en) | 2019-06-06 | 2019-06-06 | Prefabricated shear wall, connecting node and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110080455A CN110080455A (en) | 2019-08-02 |
| CN110080455B true CN110080455B (en) | 2023-10-03 |
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| CN110526654A (en) * | 2019-09-30 | 2019-12-03 | 恒美科技有限公司 | A kind of energy-saving wall and preparation method thereof |
| CN113513121B (en) * | 2021-02-07 | 2022-07-08 | 北京市住宅产业化集团股份有限公司 | Design and construction method of multifunctional hanging ring connecting node of longitudinal rib hollow wallboard |
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